Differential sensing in an active stylus

In one embodiment, a stylus receives a first signal from a first electrode of the stylus, the stylus being operable to communicate wirelessly with a device through a touch sensor of the device; receives a second signal from a second electrode of the stylus, the second signal being a reference signal...

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Hauptverfasser: Polishchuk, Igor, Sundara-Rajan, Kishore, Ali, Yassar, Lyle, James D
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In one embodiment, a stylus receives a first signal from a first electrode of the stylus, the stylus being operable to communicate wirelessly with a device through a touch sensor of the device; receives a second signal from a second electrode of the stylus, the second signal being a reference signal and the second electrode being a reference electrode; and compares the first signal with the second signal.